Sole-sewing machine.



1. A. MULLER.

SOLE SEWING MACHINE.

APPLICATION FILED JULY 23. 1914( 6 w W 0mm w mm M M r m M h v flWfl v/ Z f 4 0 w M w M m U z 1 1 ATTY.

THE COLUMBIA PLANOGRAPH ClLrWASHINGTnM n. c,

1. A. MULLER.

SOLE SEWiNG MACHINE APPLHCATION FIL ED JULY 23. 1914.

1,173,300. Patented Feb. 29,1916.

2 SHEETS-SHEET 2- THE COLUMBIA PLANUGRAPH 60., WASHINGTON. D. c.

J'OHANNES ANTON M'll'LLER, 0F HAMBURG, GERMANY.

SOLE-SEWING MACHINE.

Application filed July 23, 1914.

To all whom it may concern Be it known that I, JoHANNEs ANTON MtjLLnR, a subject of the German Emperor, and residing at Hamburg, in the German Empire, have invented certain new and useful Improvements in Sole-Sewing Machines, of which the following is a specification.

The known hand operated sole sewing machines are provided with a reciprocating needle carrier and a slide operating the same and moved back and forth by hand. These known machines require a considerable amount of power applied by jerks, which is undesirable. It has been found very difficult to construct machines having a straight reciprocating needle in which the shoe is accessible, so that it was always very difficult to bring all parts of the rim of the sole into the proper position with respect to the needle. These difliculties are overcome by providing the hand operated sole sewing machine with a needle lever driven by a hand lever. A needle lever operated by hand having a curved needle, it is true, has been suggested before for light work; according to the present invention however the needle lever is operated in a special manner by the hand lever. By the aid of a cam slot and a stud engaging the same an increased leverage is obtained when the needle pierces the sole.

Thus the amount of power necessary to be put on the hand lever is comparatively small and, what is more, is more uniform. The feeding of the shoe by means of the needle is effected through the needle lever which is adapted to be oscillated laterally by the hand lever. In using such a one armed hand lever the needle will be easily accessible. The hand lever at the same time may be adapted to operate other parts of the machine.

The new sole sewing machine is simple in its construction and convenient in handling, and is well adapted on account of its su: perior efficiency to replace the old complicated and costly machines working with a treadle.

In the drawings Figures 1 and 2 illustrate an elevation of the machine and Fig. 3 shows a plan view. Fig. 4: is a fragmentary face view of a hand lever employed with the device. Fig. 5 is a sectional view taken on the line AA of Fig. 4, and Fig. 6 is a detailed view of the reciprocating rack-bar, showing the cooperation thereof Specification of Letters Patent.

Patented Feb. 29, 1916.

Serial No. 852,648.

with the hand level and parts cooperating therewith.

To a vertical wall, a, rising from the base plate Z) a hand lever 0 is pivoted which as is shown in Figs. 1 and 2 is provided at its pivot with a disklike enlargement, and at a certain distance from the pivot pin d with a lateral stud e projecting into a slot f of the needle lever g. The latter is adapted to oscillate about a stud 71. attached to the wall a, in a vertical plane. At its end the lever g carries the needle 2', so that by the oscillatory movements of the hand lever c the needle moves up and down with respect to the needle plate 70 at the front end of the base plate 6. The shuttle (or looper) is operated in av known manner by a reciproc'ating rack bar Z, which is attached on a slide 11, adapted to slide along the horizontal rod m secured to the wall a. The slide 11, is provided with an upright projection 0 with which two pins 79 on the hand lever 0 contact on one side or the other, so that one of the same on the movement of the hand-lever toward the front (Fig. 2) moves the slide at or the rack Z respectively backward and on the movement of the hand lever backward (Fig. 1) the other pin 7) shafts the rack bar Z forward.

The feed of the work is effected in a novel manner by a lateral motion of the needle 2' pierced into the work. To enable the needle to carry out this movement, the needle lever g is mounted to'swing on a vertical pivot supported by a boss 9 which is adapted to swing on the stud or pivot 72, at right angles to the aXis of said pivot, in a manner of a universal joint, the connection of the lever g with the boss being such that said lever can oscillate laterally. A spring 1 attached to the boss 9 tends to press the lever 9 into its normal position, that is to say toward the hand lever. The transverse movement of the needle lever is efi'ected by the hand lever a, when the latter is moved from front to back, since the needle 2' is then in its lowest position.

In order to permit the lateral movement of the needle lever g, the hand lever c is provided with a somewhat crescentshaped orifice 8. Cam faces 16 Figs. 2 and a rise from this orifice to the front face of the hand lever and acam stud u is arranged on the needle lever which is adjustable in its longitudinal direction, and otherwise movable as herein after more fully explained. Normally this stud projects into the orifice s, but on backward movement of the hand lever it is forced out of the slot s by the lower cam 25 and thus is produced the lateral movement of the lever g. The stud a is guided in a slot 20 of a plate a which is arranged between the hand lever and the needle lever and is attached to the slide On moving the hand lever from back to front the stud u will remain within the orifice a, on the movement however from front to back the stud u rides up the lower cam t and will bear against the surface of the lever 0, pushing the needle lever away from the hand lever, whereby the needle shifts the work laterally. At the end of the backward movement of the handle the stud u slips off from the surface of the hand lever and when running down the upper cam 25 enters again the orifice s, the needle thus returning into its initial position ready to again perform astitch.

In order to give the stud a the movabillty spoken of above it is not directly attached to the lever 9 but to a plate j which is pivoted to the lever g. Preferably the stud is screw threaded and is held by a socket 7' firmly attached to the arm 7' and provided with inner threads corresponding to the outer threads of the stud 'u. The outer end of the socket j projects into the slot w of the plate 12 while the other end projects through the slot 00 of the lever g. The outer end of the screw stud u is provided with a head or handle 24 by which it can be turned for adjusting the throw of the needle and thus altering the feed of the work.

The take-up 3 is pivoted to the lever g and provided with a cam slot 2 into which a pin or stud e on the hand lever 0 projects to operate the take-up. On the other side of the machine the stud it carries loosely an arm 1 the free end of which projects as far as the needle plate and here forms the presser-foot. The arm 1 is provided with an adjustable pin 8, which can be adjusted by the aid of a rotatable arm 2 and projects so far as to be engaged by the lower eccentric rim of the hand lever 0, whereby the resser-foot 1 is adjusted according to the thickness of the work and presses against the same, but is released when the work is shifted. Thus an automatic clamping and timely release of the work is obtained without the use of springs.

I claim:

1. In a sole-sewing machine, in combination a hand lever and an oscillating needle lever operated by the hand lever, a cam on the hand lever and a cam follower on the needle lever adapted to be engaged by the cam on the hand lever to move the needle lever transversely.

2. In a sole-sewing machine, in combination an oscillating needle, a needle lever provided with a cam slot, a hand lever, a pin on the hand lever adapted to enter said cam slot to operate the needle lever, a cam on the hand lever and a cam follower on the needle lever adapted to be engaged by the cam on the hand lever to move the needle lever transversely.

3. In a sole sewing machine, in combination an oscillating needle, a needle lever provided with a cam slot, a hand lever provided with a pin adapted to enter said cam slot to operate the needle lever, a cam on thehand lever,-a cam follower on the needle lever adapted to beengaged by the cam on the hand lever to move the needle lever transversely, and an oscillatoryboss to which the needle lever is so connected that it can oscillate transversely to the sewing movements of the needle.

4. In a sole-sewing machine, in combination an oscillating needle, a needle lever provided with a cam slot, a hand lever provided with a pin adapted to enter said cam slot to operate the needle lever, a cam on the hand lever and a cam follower on the needle lever adapted to be engaged by the cam on the hand lever to move the needle lever transversely, the cam follower consisting of a stud attached to the needle lever.

5. In a sole-sewing machine, in combination an oscillating needle, a needle lever provided with a cam slot, a hand lever provided with a pin adapted to enter said cam slot to operate the needle lever, a cam on the hand lever, a cam follower on the needle le ver adapted to be engaged by the cam on the hand lever to move the needle lever transversely, the cam follower consisting of a stud attached to the needle lever, and a guide plate for the stud.

6. In a sole-sewing machine, in combination an oscillating needle, a needle lever provided with a cam slot, a hand lever provided with a pin adapted to enter said cam slot to operate the needle lever, a cam on the hand lever, a cam follower on the needle lever adapted to be engaged by the cam on the hand lever to move the needle lever transversely, the cam follower consisting of a stud attached to the needle lever, a guide plate for the stud, there being a slot within the guide plate engaged by the stud, and an arm pivoted to the hand lever carrying the stud. V

7. In a sole-sewing machine, in combination an oscillating needle, a needle lever provided with a cam'slot, a hand lever provided with a pin adapted to enter said cam slot to operate the needle lever, a. cam on the hand lever, a cam follower on the needle lever adapted to be engaged by the cam on the hand lever to move the needle lever transversely, the cam follower consisting of a stud attached to the needle lever, the hand 53 cam on the edge of the slot on which the slot is adapted to slip down into the slot.

8. In a sole-sewing machine, in combination a hand lever and oscillating needle lever operated by the hand lever, a cam on the hand lever and a cam follower on the needle lever adapted to be engaged by the cam on the hand lever to move the needle lever transversely, and a spring adapted to press the needle lever against the hand lever.

JOHANNES ANTON MULLER.

Witnesses:

F. A. MAX KAEMPFF, ERNEST H. L. MUMMENHOFF.

fiopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

